Datasheet

TLV431, TLV431A, TLV431B
LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR
SLVS139T − JULY 1996 − REVISED JUNE 2007
15
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
SMALL-SIGNAL VOLTAGE GAIN/PHASE MARGIN
vs
FREQUENCY
10 µF
GND
Output
180 Ω
I
K
6.8 kΩ
1k 10k 100k 1M100
− Small-Signal Voltage Gain/Phase Margin − dB
f − Frequency − Hz
A
V
TEST CIRCUIT FOR VOLTAGE GAIN
AND PHASE MARGIN
80
70
60
50
40
30
20
10
0
−10
0°
36°
72°
108°
144°
180°
Phase Shift
4.3 kΩ
5 V
I
K
= 10 mA
T
A
= 25°C
−20
Figure 13
100 Ω
100 Ω
GND
Output
I
K
0.1
1k 10k 100k 1M 10M
− Reference Impedance −
1
f − Frequency − Hz
REFERENCE IMPEDANCE
vs
FREQUENCY
10
100
ka
|z
|
Ω
I
K
= 0.1 mA to 15 mA
T
A
= 25°C
TEST CIRCUIT FOR REFERENCE IMPEDANCE
0.01
−
+
Figure 14